Abstract: An ink supply apparatus for printers is installed on an ink cartridge housing compartment of a printer and includes a liquid storing cartridge which has an ink channeling chamber and a buffer chamber that communicate with each other. The ink channeling chamber has an ink inlet corresponding to an ink intake aperture formed in the ink cartridge housing compartment. An ink storing unit is provided to hold the ink which can flow to the liquid storing cartridge through a duct. The ink cartridge housing compartment further has a chip dock which holds control chips corresponding to signal receiving sections of the printer. A bucking member is provided to press the chip dock so that the control chips may form a tight coupling with the signal receiving sections.